United States might not be able to save its ally, South Vietnam, from its communist aggressors.
Answer:
Chinese historians have spent well over a thousand years trying to understand why the Han Dynasty collapsed. Over time they developed three main theories: 1) bad rulers; 2) the influence of empresses and court eunuchs over child emperors too young to rule by themselves; and 3) the Yellow Turban Revolt.
Explanation:
The correct answer is 3) a polytheistic mythology
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